Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed PUMAKIT Domain (sec .opsecurity1 .art in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".sec.opsecurity1.art"; endswith; fast_pattern; reference:url,www.elastic.co/security-labs/declawing-pumakit; classtype:command-and-control; sid:2058271; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_12_13, deployment Perimeter, deprecation_reason Relevance, malware_family PUMAKIT, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_01_24, reviewed_at 2025_01_24;)